Alternative, more realistic headline for the article: "Mayors of NY and Los Angeles pledge to keep Democrats in extended minority."

The nation's two largest cities have sharply limited their cooperation with U.S. immigration authorities seeking to deport undocumented immigrants.

President Barack Obama's administration has used so-called detainer requests to target undocumented immigrants convicted of criminal acts, especially violent ones.

New York and Los Angeles do not hold undocumented inmates in jail at the request of the U.S. Department of Immigration and Customs Enforcement (ICE) unless the detainer request is accompanied by a judge's order, officials said.

Trump said during a debate with Democratic presidential nominee Hillary Clinton in October he would seek to deport major drug dealers. "We have some bad hombres here and we're going to get them out," he said.